Hi,
If you need a precise placement I find it easier not to use the Extend X/Y Size to area option. Instead, you can manually position it where you need it and then apply the clipping operation separately. Here's how to adapt the scene:
- Turn off Properties > General > Clipping Area > Extend X/Y Size to Area
- Enter a value in Properties > Geometry X Size and Y Size to create an array large enough to cover the area.
- Move the entire RC object over the clipping spline so that it's positioned as you would like.
- Open the Base Objects roll-out and reselect the clipping spline from the scene to update the clipping operation
That should help.
Best regards,